313 water systems in Wyoming have at least one health-based violation on record. The system with the most health-based violations is Tata Chemicals Soda Ash Partners, LLC in Green River with 95 health-based violations. Health-based violations mean a system exceeded an EPA maximum contaminant level or failed required treatment standards.
| Water System | City | Population | Health Violations | Total Violations |
|---|
| Tata Chemicals Soda Ash Partners, LLC |
Green River | 701 |
95 | 146 |
| Town of Dixon |
Dixon | 114 |
93 | 106 |
| Lance Creek Water District |
Lance Creek | 45 |
64 | 201 |
| Exxon Mobil - Shute Creek Gas Plant |
Kemmerer | 250 |
62 | 83 |
| Town of Baggs |
Baggs | 400 |
48 | 84 |
| Stone Creek Hoa |
Torrington | 100 |
30 | 96 |
| Cottonwood Acres |
Torrington | 95 |
28 | 30 |
| Kemmerer-Diamondville Jpb |
Kemmerer | 3,348 |
27 | 28 |
| Little America Hotels & Resorts, Inc - Wy |
Little America | 2,004 |
26 | 29 |
| Ynp-Old Faithful |
Yellowstone | 7,675 |
25 | 53 |
| City of Buffalo |
Buffalo | 4,419 |
20 | 27 |
| American Soda LLC |
Green River | 450 |
19 | 21 |
| Town of Cokeville |
Cokeville | 535 |
17 | 323 |
| Sisecam Wyoming LLC |
Green River | 450 |
17 | 17 |
| Btnf-Blackrock Work Center |
Jackson | 50 |
16 | 1,147 |
| Brush Creek Ranch |
Saratoga | 717 |
14 | 68 |
| Bennor Estates & Improvement District |
Gillette | 144 |
13 | 13 |
| South Fork Mountain Lodge |
Buffalo | 76 |
12 | 42 |
| Key Largo Utilities |
Sheridan | 105 |
11 | 398 |
| Ethete Water System |
Fort Washakie | 1,950 |
10 | 60 |
| Rivermeadows Water District |
Jackson | 100 |
10 | 53 |
| Weston County Mallo Camp |
Newcastle | 201 |
10 | 19 |
| Broken Wrench LLC |
Casper | 30 |
9 | 99 |
| Ymca of the Big Horns Camp Roberts |
Sheridan | 40 |
9 | 16 |
| Power Resources Inc/Smith Ranch |
Glenrock | 40 |
9 | 11 |
| Red Water Distribution LLC |
Aladdin | 35 |
9 | 9 |
| Rawlins Water Supply, City of |
Rawlins | 9,006 |
8 | 119 |
| Brooks Lake Lodge |
Dubois | 67 |
8 | 24 |
| Potlatch Trailer Court |
Torrington | 70 |
8 | 14 |
| Keyhole St Park Cottonwood Cg |
Moorcroft | 100 |
8 | 10 |
| City of Mills |
Mills | 4,050 |
8 | 8 |
| Town of Manville |
Manville | 97 |
7 | 136 |
| Town of Burlington |
Burlington | 348 |
7 | 81 |
| Rimrock Water Company LLC |
Aladdin | 365 |
7 | 31 |
| Btnf-Granite Creek Cg |
Jackson | 100 |
7 | 27 |
| Boulder Store/Gas Station |
Boulder | 30 |
7 | 21 |
| Devils Tower Koa-Campstool |
Devils Tower | 516 |
7 | 17 |
| Bunkhouse Bar and Grill |
Cheyenne | 174 |
7 | 7 |
| Leisure Valley Inc/ Star Valley RV Park |
Grover | 1,910 |
6 | 803 |
| Osmond I&S District |
Afton | 31 |
6 | 204 |
| Town of Granger |
Granger | 139 |
6 | 34 |
| Town of Pavillion |
Pavillion | 230 |
6 | 27 |
| Bhnf-Ranger Creek Cg |
Sheridan | 40 |
6 | 27 |
| Wind River View Campground |
Boulder | 104 |
6 | 23 |
| Btnf-Fremont Lake Cg |
Jackson | 50 |
6 | 12 |
| Devils Tower View |
Devils Tower | 43 |
6 | 12 |
| We Soda Alkali, LLC |
Green River | 950 |
6 | 9 |
| Dave Johnston Power Plant |
Glenrock | 165 |
6 | 9 |
| Camp Buffalo Bill |
Casper | 250 |
6 | 8 |
| Owl Creek Water District |
Thermopolis | 100 |
6 | 8 |
| Elephant Head Lodge |
Cody | 41 |
6 | 8 |
| Rozet Ranchettes I&S District |
Gillette | 85 |
6 | 6 |
| Pub Place |
Jackson | 497 |
5 | 336 |
| Crooked Creek Guest Ranch |
Dubois | 123 |
5 | 84 |
| Town of Wheatland |
Wheatland | 3,659 |
5 | 80 |
| Grand Teton Park RV Resort |
Moran | 502 |
5 | 61 |
| Bhnf--Burgess JCT Visitor Cntr |
Sheridan | 155 |
5 | 25 |
| Town of Star Valley Ranch |
Star Valley Ranch | 2,030 |
5 | 18 |
| Town of La Barge |
La Barge | 347 |
5 | 13 |
| Town of Saratoga |
Saratoga | 1,720 |
5 | 11 |
| Btnf-Blackrock Ranger Station |
Jackson | 71 |
5 | 7 |
| Triangle C Ranch |
Dubois | 67 |
5 | 6 |
| Hoy Mobile Home Park |
Gillette | 100 |
5 | 5 |
| Shoshone Nf-Falls Cg |
Dubois | 100 |
5 | 5 |
| Jeffrey City Water & Sewer District |
Jeffrey City | 40 |
4 | 237 |
| City of Lander |
Lander | 7,615 |
4 | 63 |
| Akal Travel Center |
Laramie | 202 |
4 | 53 |
| Kennington Springs Pipeline |
Fairview | 45 |
4 | 46 |
| Veterans Administration Medical Center |
Sheridan | 685 |
4 | 33 |
| Town of Alpine |
Alpine | 1,300 |
4 | 32 |
| Town of Aladdin |
Aladdin | 62 |
4 | 32 |
| Wrangler Estates |
Gillette | 250 |
4 | 23 |
| Lava Mountain Lodge |
Dubois | 52 |
4 | 22 |
| El Rancho Village RV Park & Cabins |
Wheatland | 56 |
4 | 19 |
| Jacz Drive in and RV Park |
Etna | 158 |
4 | 17 |
| Ynp - Madison Junction Water System |
Yellowstone | 1,205 |
4 | 16 |
| 307 Horse Racing |
Casper | 150 |
4 | 16 |
| Meadowlark Ski Resort |
Buffalo | 92 |
4 | 16 |
| Arng-Guernsey Training Camp |
Guernsey | 302 |
4 | 14 |
| B&A Marina |
Cheyenne | 200 |
4 | 13 |
| Town of Medicine Bow |
Medicine Bow | 189 |
4 | 12 |
| Devils Tower Gulch |
Devils Tower | 34 |
4 | 12 |
| Los Comales LLC |
Gillette | 90 |
4 | 11 |
| Lost Creek Ranch |
Moose | 105 |
4 | 10 |
| Bear River Regional Joint Powers |
Bear River | 1,200 |
4 | 9 |
| Fort Phil Kearny St Hist Site |
Banner | 89 |
4 | 9 |
| Cheyenne RV Resort, LLC |
Cheyenne | 82 |
4 | 9 |
| Camp Sacajawea |
Casper | 79 |
4 | 8 |
| Blm - Five Springs Campground |
Cody | 25 |
4 | 8 |
| Fremont County Youth Camp |
Lander | 70 |
4 | 6 |
| Absaroka Mountain Lodge |
Cody | 67 |
4 | 6 |
| Mbnf-Ryan Park Cg |
Saratoga | 40 |
4 | 5 |
| Keyhole St Park Headquarters |
Moorcroft | 100 |
4 | 4 |
| Town of Marbleton |
Marbleton | 861 |
3 | 1,808 |
| Ward Creek Landowners Association |
Gillette | 77 |
3 | 235 |
| Town of Albin |
Albin | 181 |
3 | 121 |
| Town of Lusk |
Lusk | 1,576 |
3 | 62 |
| Akal Energy/Tumbleweed Express |
Laramie | 50 |
3 | 23 |
| Sleeping Giant Ski Area |
Cody | 112 |
3 | 22 |
| Hide-A-Way Mobile Village |
Cheyenne | 107 |
3 | 22 |